# ePowerSwitch Midas Frontend

Midas frontend that wraps an EPICS ePowerSocket drivers

![alt text](.img/controlPanel.png)

## List of compatible EPICS driver

https://gitea.psi.ch/lin-epics-modules/ePowerSwitch/src/branch/master/README.md

# How to use
## Clone & Compile

Clone the frontend code

```bash
$ git clone --recurse-submodules -j8 <URL> 
$ cd ./ePowerSwitch_frontend
```

Compile it

```bash
$ mkdir build
$ cmake -B build
$ cmake --build build
```

## Run

Start it with default name
```bash
$ $PWD/build/ePowerSwitchFront
```
Start it with specified frontend name and default equipment name
```bash
$ $PWD/build/ePowerSwitchFront <frontendName>
```
Start it with specified frontend name and equipment name
```bash
$ $PWD/build/ePowerSwitchFront <frontendName> <equipmentName>
```

# Features

## Controls

The frontend exposes for each socket two ODB keys:

```
Socket n requested => indicates the requested state for the socket number n
Socket n current   => indicates the current state of the socket number 
```

There are 3 state currently supported:
- On
- Off
- Restart

## Dynamic grow / shrink

This frontend will detect the number of sockets that EPICS declares.
It will adapt accordingly. This feature also works at runtime.

# Architecture

![alt text](.img/graph.png)

## power_switch_scfe

This class extends the Midas frontend. 

## power_switch

This class extends Midas equipment. 
Its job is to handle a changing number of sockets.

## outlet

This class allows handling each outlet separately, and managing all different possible transitions.